# Wonky USB/Keyboard Behavior (and Fix)

**URL:** <https://forum.clockworkpi.com/t/wonky-usb-keyboard-behavior-and-fix/14327>\
**Category:** DevTerm\
**Created:** [August 25, 2024, 12:20pm UTC](https://forum.clockworkpi.com/t/wonky-usb-keyboard-behavior-and-fix/14327 "2024-08-25T12:20:58Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![wetworks](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.clockworkpi.com/wetworks/32/10126_2.png) [@wetworks](https://forum.clockworkpi.com/u/wetworks)\
**Post date:** [August 25, 2024, 12:20pm UTC](https://forum.clockworkpi.com/t/wonky-usb-keyboard-behavior-and-fix/14327/1 "2024-08-25T12:20:58Z")

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I bought a in-very-good-condition-with-extras DevTerm from another forum member, but elected to replace the A04 with my own CM4 (the seller had included a CM4 carrier board).

(First off, I see how Clockworkpi had a lot of lessons learned from DevTerm and applied them to the uConsole (which I also own)–the assembly process for the uConsole is much easier and the overall build sturdiness much more so with the metal screws and plates. The only thing I wish the uConsole had was the battery hatch).

Well anyway, i disassembled the DevTerm, replaced the A04 with the CM4 + carrier board, downloaded AK-Rex’s image, edited the config file and booted up.

The DevTerm booted up fine but the only problem was the keyboard and trackball were NOT working. I rebooted and connected a keyboard and mouse via USB via both sets of USB ports and no joy.

Long story short, if this happens to you, and you’ve tried re-seating full disassembly to see if the pogo pins for the keyboard may be the issue or some other thing\*\*–try re-seating the CM4 on the carrier board\*\*. That’s what fixed it for me ultimately. Weird that the DevTerm still booted up–just without any USB devices–but hey it worked.